In Thunderball, as the S.P.E.C.T.R.E. crew finishes up Phase III and Largo has made his radio call to Blofeld, he “went into the stateroom and carefully made himself a tall glass of his favourite drink – crème de menthe frappé with a maraschino cherry on top. He sipped it delicately to the end and ate the cherry.”
A Crème de Menthe Frappé is simply shaved ice with Green Crème de Menthe poured over the top.